reduce pagesize to default: 4096

this should help with write speeds and dirty less pages

Author: josibake

src/dbwrapper.cpp

@@ -429,7 +429,7 @@ MDBXWrapper::MDBXWrapper(const DBParams& params)
 
     LogPrintf("Opening MDBX in %s\n", fs::PathToString(params.path));
 
-    DBContext().create_params.geometry.pagesize = 16384;
+    DBContext().create_params.geometry.pagesize = 4096;
 
     // We need this because of some unpleasant (for us) passing around of the
     // Chainstate between threads during initialization.